Thermistors and LDR's Flashcards
What is a thermistor? What is it used in?
Temperature sensors, fire alarm
What is the pattern of a thermistors resistance against temperature?
As resistance decreases, temperature increases
At low temperatures what is the resistance like? how much current flows through it?
At low temperatures, the resistance of a thermistor is high, and little current can flow through them.
At high temperatures, what is the resistance like? how much current can flow through it?
At high temperatures, the resistance of a thermistor is low, and more current can flow through them
What does LDR stand for? what are they used for? give an example of something they are used in
Light dependent resistor,used to detect light levels, for example, in automatic security lights.
If the light level is low, what is the oattern of resistance? How much current can flow through it?
In the dark and at low light levels, the resistance of an LDR is high, and little current can flow through it.
In bright like what is the resistance like, how much current can flow through it?
In bright light, the resistance of an LDR is low, and more current can flow through it.
